Abstract: The invention concerns a device for determining the temperature inside an item to be cooked (12). The invention comprises at least one temperature sensor (20) for detecting at least one surface temperature of the item to be cooked (12) and/or an ambient temperature around the item to be cooked, particularly at a measuring location inside the cooking chamber surrounding the item to be cooked, preferably with an ambient temperature sensor which is arranged at said measuring location. Furthermore, the device comprises at least one distance sensor (22) for detecting one or multiple distances between the distance sensor (22) and one or multiple distance measuring points (36) on the surface of the item to be cooked (12).

Abstract: A temperature probe includes a shaft having a distal end, a proximal end, and a tip disposed at the distal end. The probe also includes an infrared sensor configured to measure a temperature of a structure disposed proximate the shaft. The probe further includes a temperature sensor disposed distal to the infrared sensor. The temperature sensor is configured to measure a body cavity temperature of a patient.

Abstract: This invention relates to a device for testing a heat detector. The device has a housing that is shaped to surround a heat detector and includes a heating element. A fan is located near the heating element and is adapted to activate the heat detector by increasing the temperature around the heat detector. The housing also includes a temperature device that measures the temperature near the heat detector. Furthermore, a display is attached to the housing to show the temperature around the heat detector during testing.

Abstract: A temperature measurement system including a measurement plate placed on a measurement plane specified on at least one of an intake opening and an exhaust opening of a rack storing an information processing apparatus or at a position being away from the measurement plane by a predetermined distance; and an infrared camera configured to capture an image of the measurement plate, where the infrared camera is placed at a position with which the measurement plane is not captured and the measurement plate is captured by the infrared camera.

Abstract: This disclosure describes systems, methods, and apparatuses for making a non-contact measurement of a substrate in a plasma processing chamber that accounts for stray blackbody radiation. In particular, a photocurrent is calculated that can be attributed to the stray blackbody radiation based upon a temperature of the stray blackbody radiation, a reflectance of a target substrate, and a temperature of the substrate. Knowing the photocurrent attributable to the stray blackbody radiation, a non-contact temperature measurement can be made, and the photocurrent attributable to the stray blackbody radiation can be subtracted out to arrive at a more accurate non-contact substrate temperature measurement.

Abstract: A method and system to position a non-immersion temperature sensor relative to a water heater tank is disclosed. An illustrative but non-limiting example may be found in a mounting bracket that includes a body that has a sensor portion configured to receive at least a portion of a temperature sensor assembly. When installed, the mounting bracket may include a biasing element to bias the temperature sensor assembly towards the water heater tank. The bias element may help the temperature sensor assume a proper position relative to the water heater tank, despite variations in equipment that may exist in the field.

Abstract: A method of forming a vinylidene fluoride (VDF) oligomer or co-oligomer film on a substrate is disclosed. The method comprises forming a VDF oligomer or co-oligomer precursor solution; depositing the VDF oligomer or co-oligomer precursor solution onto the substrate to form a preliminary VDF oligomer or co-oligomer film on the substrate; and applying uniaxial pressure on the preliminary VDF oligomer or co-oligomer film and the substrate at an elevated temperature to form the VDF oligomer or co-oligomer film on the substrate. The substrate may comprise a metal surface which may be used as a bottom electrode and a top electrode may be deposited on the VDF oligomer or co- oligomer film The VDF oligomer or co-oligomer film, the bottom electrode on the substrate and the top electrode on the VDF oligomer or co-oligomer film form an electrical device.

Abstract: Provided is a mirror capable of measuring the temperature of an object in a state that the field of view of a radiation thermometer is accurately directed toward the object, and a mirror structure. An object temperature located in front of a mirror is measured by a radiation thermometer while reflecting a mirror image of the object located in front of the mirror on a mirror surface of the mirror in a state that the mirror image includes a portion corresponding to a field of view of the radiation thermometer.

Abstract: Provided is an infrared ray sensor that can conduct a plurality of different types of detection such as temperature detection and gas detection in a simple structure and that is small size and low cost. The infrared ray sensor (1) includes, on one base (10), a first infrared ray detection unit (31) including at least one infrared ray detection element (20) including an infrared ray detection material (22) with physical properties changing depending on properties of incident infrared rays and receives and detects ambient infrared rays, and a second infrared ray detection unit (32) including at least one infrared ray detection element (20) having an identical element structure to the infrared ray detection element of the first infrared ray detection unit (31), is irradiated with infrared rays X for measurement having specific physical properties, and detects a change in the physical properties of the infrared rays X for measurement.

Abstract: An imaging thermographic measuring system to measure the thermal output (Qout) at a target object, such as a building wall, building facade, or the like, comprising a measuring station provided for the arrangement distant from the object with an electric imaging device to record a thermographic thermal image, with a temperature distribution to be allocated thereto, and with a temperature sensor distant from the object to measure a temperature (Tref) distant from the object; at least one thermal transition sensor provided to be arrange close to the object, a transmission arrangement to transmit values between at least one thermal transition sensor and the measuring station, with the thermal transition sensor being embodied to predetermine the test values to determine a thermal transition coefficient (h).

Abstract: The invention relates to a temperature control device (1) intended to be attached inside an opening (2) of a wall (8) defining an area to be controlled, said device including: a frame (4) intended to be fitted into said opening (2), provided with a means for attachment onto said opening, and with a sealing means for ensuring that the wall (8) is sealed at the opening (2); a heat sensor (5) that is housed inside the frame (4) and is arranged so as to receive infrared waves and convert said waves into electrical signals; and an optical system (6) that is rigidly connected to the frame (4) and is intended for focusing the infrared waves, coming from the area to be controlled, toward said heat sensor (5). The invention also relates to a chamber, having an opening and at least one such temperature control device mounted into said chamber. The invention moreover relates to a method for mounting such a temperature control device into an opening of a wall defining an area to be controlled.

Abstract: This disclosure relates to medical temperature sensors and related systems and methods. In some aspects, a sensor assembly includes a non-invasive temperature sensor to detect a temperature of a medical fluid in a medical fluid line and an ambient temperature sensor to detect an ambient air temperature.

Abstract: An assembly determines an analyte concentration in a sample of body fluid. The assembly includes a test sensor having a fluid-receiving area for receiving a sample of body fluid, where the fluid-receiving area contains a reagent that produces a measurable reaction with an analyte in the sample. The assembly also includes a meter having a port or opening configured to receive the test sensor; a measurement system configured to determine a measurement of the reaction between the reagent and the analyte; and a temperature-measuring system configured to determine a measurement of the test-sensor temperature when the test sensor is received into the opening. The meter determines a concentration of the analyte in the sample according to the measurement of the reaction and the measurement of the test-sensor temperature.

Abstract: A mechanism of a monitoring unit of an electric rotating machinery covered in a housing that intercepts photoelectron transmission, the mechanism has: a monitoring window penetrating a part of the housing and configured to allow passage of photoelectrons and not to allow passage of gas; a camera arranged outside the monitoring window and configured to receive radiated photoelectron generated in the housing and passing through the monitoring window and to generate image data from the radiated photoelectron; and a computing unit configured to process the image data. The computing unit has reference image data storage means for storing image data resulting from blackbody radiation occurring in a reference state in the housing, as reference image data, and temperature calculating means for comparing the image data with the reference image data, thereby to calculate the temperature in the housing.

Abstract: [Problem] To provide a method that can determine a thermal property of a substrate in a short time and a method that can determine a thermal process condition of an open-loop step. [Solving Means] In accordance with the substrate thermal property determining method of the present invention in a rapid thermal processing apparatus 1 comprising lamps 9 for heating a wafer W and temperature sensors T1 to T7 arranged so as to oppose the lamps 9, temperature data sequentially outputted from the temperature sensors T1 to T7 is obtained, while subjecting the wafer W arranged between the lamps 9 and temperature sensors T1 to T7 to pulsed heating with the lamps 9. Thereafter, the thermal property of the wafer W is determined by using the temperature data.

Abstract: An ear thermometer which includes a temperature detection element and infrared detection element arranged near the opening portion of a probe achieves a reduction in manufacturing cost while reducing the influence of thermal shock. This invention provides an ear thermometer incorporating, in a probe, a temperature detection element to detect an environmental temperature and an infrared detection element to detect infrared radiation emitted from a temperature measurement region in an earhole. The probe includes an end face portion having an opening in its distal end, an inner surface portion of a hollow cylindrical member, and an inwardly protruding engaging portion. A detection element housing is fixed to close the opening of the probe and to form an air layer between the detection element housing and the probe.

Abstract: A thermometer for determining the temperature of an animal's ear drum. The thermometer includes a probe, an infrared-radiation detector adapted to receive infrared radiation emitted by the ear drum, and devices that help insure that the probe is disposed in a desired position in the ear canal so as to optimize the infrared radiation received from the ear drum, and to minimize the infrared radiation received from other ear parts. A method of using the thermometer is also disclosed.

Abstract: Disclosed is a cargo deck for a cargo hold of an aircraft, comprising at least one temperature measuring device for non-contacting measurement of the temperature of a container, a pallet or a similar unit load device (ULD).

Abstract: The present invention is drawn to a non-contact thermometer that is operable to emit a first light having a first color to create a spot of a first color at a reference target and to detect the temperature of the reference target. The non-contact thermometer is additionally operable to establish a temperature difference threshold. In use, once a temperature difference threshold is selected and once the temperature of the reference target is detected, the non-contact thermometer may detect a temperature of another target. Further, if the detected temperature of the other target is outside of the temperature difference threshold as compared to the temperature of the reference target, the non-contact thermometer is operable to emit a second light having a second color to create a spot of a second color at the other target.

Abstract: Methods are provided for using a programmable hand-held inspection system to direct an inspection process. Methods typically involve loading a survey template application software routine into the programmable hand-held inspection system where the survey template application software routine describes at least one aspect of the inspection process. Some embodiments involve wirelessly uploading at least a portion of the survey template application software routine. Generally an image representation of an area is provided on a display. The system may be used to guide an operator through at least one aspect of the inspection process or to perform steps in a survey. A location within the vicinity of the area may be identified using a global positioning system. A record may of the survey may be created.

Abstract: A cryogenic turbo-pump with an inducer and a system for detecting an onset of cavitation at the blade tips of the inducer. An IR imaging sensor is used to view the blade tips during operation of the turbo-pump for a temperature drop that indicates the onset of cavitation. The imaging sensor includes a means to vary the image capture rate to that the rotating blade tip will appear to be stationary in order to measure the blade tip temperature. A window is formed in the inducer housing in which the imaging sensor can view the blade tips during operation.

Abstract: An electronic thermometer includes a probe adapted to be heated by a subject for use in measuring a temperature of the subject. At least one temperature sensor detects a temperature of the probe. An IR emitter emits an infrared signal from the probe. And an IR detector detects the infrared signal emitted by the IR emitter. The detection of the IR signal by the IR detector indicates that the probe is received in a probe cover.

Abstract: A temperature monitoring technique for collecting radiation intensity (blackbody emission) across a broad wavelength range. A solid state spectrometer (26) acquires spectra from a sample (10) in real time and resolves the spectra to a radiation intensity (I) versus wavelength (?) curve. This curve is fitted to Planck's equation using a non-linear least squares fitting analysis. The system can be configured to self-calibrate and then lock in an amplitude value (A) which is used in subsequent temperature measurements by fitting to the blackbody emission curve. Preferably, the spectrometer (26) is flat field corrected (36) in an initial step to counteract variations in the spectrometer response with wavelength.

Abstract: A temperature sensing device for remotely detecting the temperature of a subject having an identifying feature and a target zone in a fixed relationship to the identifying feature comprising: a distance sensor which measures the distance between the subject and the distance sensor; a temperature sensor for measuring a temperature difference in a sensing zone; a digital image capture device for capturing a digital image of the subject; a means of tilting at least the temperature sensor along at least one axis, and preferably tilting and panning along two axes; a controller that actuates the tilting means; and a support for supporting the distance sensor, the temperature sensor and the digital image capture device; wherein the controller tilts the distance sensor using the tilting means to reduce the distance between the target zone and the sensing zone; and a temperature sensor that measures a temperature difference proximate to the target zone, to detect elevated temperature illness in humans or animals.

Abstract: An infrared sensor comprises: an electrical insulating film sheet; first and second temperature sensor devices which are provided on one side of the electrical insulating film sheet, and are located at a distance from each other; a pair of contact electrodes, with which the first and second temperature sensor devices are attached respectively, formed on one side of the electrical insulating film sheet; an infrared absorbing film provided on the other side of the electrical insulating film sheet opposite the first temperature sensor device; and an infrared reflector film provided on the same side as the infrared absorbing film opposite the second temperature sensor device. The first and second temperature sensor devices respectively comprise: a thermistor element; and a pair of electrode layers, in which one of them is in contact with the contact electrode, formed both on the upper and lower surfaces of the thermistor element.

Abstract: An object is to realize an ear thermometer that is configured to easily arrange a sensor in a sensor mirror and is suitable for mass production. The ear thermometer has a probe. The probe includes a probe body and a temperature measuring part joined with the probe body. The temperature measuring part includes a flange coupled with the probe body and a front end part extending from the flange, the front end part incorporating a sensor mirror.

Abstract: A sensor array has a plurality of sensor elements, each of which has a rectangular frame shaped frame portion formed by connecting a plurality of frame pieces and a membrane that is constructed within the frame portion and has sensitivity as sensor, and the plurality of sensor elements are disposed in a planar shape in a state that the frame pieces in adjacent sensor elements are shared. The membrane has covexoconcave shape in which rectangular concave portions and rectangular convex portions are disposed in a web shape.

Abstract: Multilayer articles such as thin-film solar cells can be effectively tested under thermal load in a mini-module that includes a chamber or enclosure in which one or more laminated multilayer articles are housed. The inner dimensions of the chamber, at least along the axis that is perpendicular to the plane defined by the laminated solar cells, are configured to remain substantially constant during testing. Cooling the laminated solar cells in the mini-module device causes the encapsulant material to shrink and thereby induces accelerated failures in the laminated solar cells and associated structures. A technique of detecting the presence of defects or failures is near infrared radiation thermography wherein NIR images of the laminated solar cells are taken during the cooling process. The color patterns manifested from the cooled laminated solar cells can reveal the location, nature and extent of the defect or failure.

Abstract: A system and method for warm body presence detection, the system comprising a detection unit comprising a light focusing unit for absorbing light from an inspected region; and a thermal detection unit for receiving the absorbed light, sensing infrared radiation and generating a signal indicative of the sensed infrared radiation; and a processing unit for analyzing the generated signal and deciding based on the analysis whether a warm body presence has been detected. The method for warm body presence detection comprises receiving and analyzing by a processing unit inputs from a short wavelengths thermal detector and a long wavelengths thermal detector, the inputs comprise indications of the amount of emitted infrared radiation in the respective wavelength ranges inspected by each thermal detector, and deciding that a warm body presence has been detected in case the emitted infrared radiation values detected by both thermal detectors correspond to predefined values.

Abstract: A temperature measurement system including a measurement plate placed on a measurement plane specified on at least one of an intake opening and an exhaust opening of a rack storing an information processing apparatus or at a position being away from the measurement plane by a predetermined distance; and an infrared camera configured to capture an image of the measurement plate, where the infrared camera is placed at a position with which the measurement plane is not captured and the measurement plate is captured by the infrared camera.

Abstract: The present invention discloses a laser-aiming device for a radiant thermometer, which comprises a laser adjustment seat, a laser device, and a prism having two inclined faces. The laser adjustment seat is arranged on a temperature detection device of the radiant thermometer. The laser device and the prism are arranged on the laser adjustment device. The laser device generates a laser beam. The prism is located at the illuminated side of the laser beam and coaxial with the laser device, refracting the laser beam into two laser beams that generate two laser spots designating the detectable area of the radiant thermometer.

Abstract: A thermal inspection system includes a fluid source configured to supply a warm flow and a cool flow, indirectly or directly, to internal passage(s) of a component. The system includes an imager configured to capture a time series of images corresponding to a transient thermal response of the component to the warm and cool flows. The system further includes at least one flow meter configured to measure the warm and cool flows supplied to the component and a processor operably connected to the imager. The processor determines the transient thermal response of the component around a transition time. The flow supplied to the component switches from the warm flow to the cool flow at the transition time. The processor compares the transient thermal response around the transition time with one or more baseline values or with an acceptable range of values to determine if the component meets a desired specification.

Abstract: An intelligent corkscrew device which determines the temperature of the bottle and informs the consumer as to what type of wine is suitable for that temperature. In a preferred embodiment, the corkscrew provides a temperature readout. Alternative embodiments provide entertainment features such as voice or other audio indications related to the temperature. Still other embodiments include visual indication such as lamps which indicate what type of wine would be proper for the temperature of the bottle being measured. The corkscrew uses thermal measurement of the exterior of the wine bottle to measure the temperature. The measurement is made by a temperature sensing device, such as a thermistor or infrared detector on the end of the lever arm or other suitable location.

Abstract: In a method for automated, contactless and non-destructive testing of a material joint (4), a dynamic threshold value is varied between a minimum threshold value and a maximum threshold value, with regions of a heat flow dynamics through the material joint (4) being determined which represent values of the heat flow dynamics exceeding the dynamic threshold value. The regions of the heat flow dynamics are examined with respect to an abrupt change in perimeter. An Abrupt change in perimeter occurs if a boundary (7) between a molten zone (5) and a non-molten but still adhering zone (6) of the material joint (4) is being crossed.

Abstract: A removable protective cover for an insertion probe of a medical instrument. The cover contains a flexible tubular body that compliments the probe geometry and a radially disposed flange that surrounds the proximal end of the body. A series of snap-on fasteners removably connect the cover to the instrument. A camming surface is located on the outer face of the flange which coacts with a cam follower that is movably mounted upon the instrument to flex the cover sufficiently to open the fastener and release the cover from the instrument and move the cover axially toward the distal end of the tip.

Abstract: There are many industrial applications in which non-contact temperature sensing is useful for increasing production speed and quality, such as printing, laminating, extrusion, and metal forming. Disclosed is a non-contact temperature determining apparatus which uses two wide wavelength bands integrating sensors to determine the radiance ratio of a target and thereby determine a corresponding temperature of the target. Also disclosed is a non-contact temperature determining apparatus in which a beam splitter passes one wide wavelength band to a sensor and reflects another distinct wide wavelength band to another sensor from which temperature can be determined. A disclosed embodiment of the dual waveband temperature detector improves upon traditional and currently available ratio pyrometers by further reducing the cost of the system, making installation and use easier, and improving temperature detection for low temperature industrial applications.

Abstract: One aspect of the present invention is an infrared thermometer with an infrared sensor. The infrared thermometer is adapted for determining a temperature on at least one predetermined spot on or in a human or animal body and further comprises recognition means for recognizing if the sensor is properly positioned on said at least one predetermined spot. Further shown is a method of operating an infrared thermometer.

Abstract: A sensor element for detecting electromagnetic radiation, particularly in the infrared range, comprises one or more heat-sensitive portions provided on a substrate and one or more influencing layers for influencing the absorption and/or reflection of the electromagnetic radiation to be detected. The heat-sensitive portion(s) and/or the influencing layers are arranged on the substrate in accordance with the thermal properties of the influencing layers, preferably asymmetrically.

Abstract: A smart radiation thermometry system including a turbine component is provided. The thermometry system also includes at least one smart real time processing sub-system electrically coupled to at least one detector array via at least one high-speed multi-channel ADC. The at least one smart real time processing sub-system calculates temperature and emissivity of the turbine component based upon a computed radiance temperature, reflection correction and multi-wavelength algorithm. The smart real time processing sub-system also transmits data indicative of the temperature, emissivity and other plurality of parameters within a pre-determined time period to a communication unit. The smart real time processing sub-system also outputs emergency alarm signals and controls either directly or via a controller one or more actuators coupled to the gas turbine based upon the data to ensure optimum operation of the gas turbine within safe operating limits.

Abstract: An apparatus determines cooling characteristics of an operational cooling device used for transferring heat from an electronic device. The operational cooling device is thermally coupled to a heat pipe. The heat pipe has an exposed surface for selective application of heat thereon. Heat from a localized heat source is selectively applied to at least one region of the exposed surface. The heat source is preferably capable of being varied both positionally relative to the exposed surface and in heat intensity. A heat shield is preferably positioned around the exposed surface of the heat pipe to isolate the operational cooling device from the heat from the localized heat source. A temperature detector repeatedly measures a temperature distribution across the exposed surface while the cooling device is in a heat transfer mode. The temperature distribution is then used to thermally characterize the operational cooling device.

Abstract: The present invention discloses a laser-aiming device for a radiant thermometer, which comprises a laser adjustment seat, a laser device, and a prism having two inclined faces. The laser adjustment seat is arranged on a temperature detection device of the radiant thermometer. The laser device and the prism are arranged on the laser adjustment device. The laser device generates a laser beam. The prism is located at the illuminated side of the laser beam and coaxial with the laser device, refracting the laser beam into two laser beams that generate two laser spots designating the detectable area of the radiant thermometer.

Abstract: A thermal detector includes a substrate, a support member, a heat-detecting element, a thermal transfer member, a first light-absorbing layer and a second light-absorbing layer. The support member is supported on the substrate so that a cavity is formed between the substrate and the support member. The heat-detecting element is supported on the support member. The thermal transfer member includes a connecting portion connected to the heat-detecting element and a thermal collecting portion formed over the heat-detecting element and having a surface area larger than a surface area of the connecting portion as seen in plan view. The first light-absorbing layer contacts the thermal transfer member and disposed between the thermal transfer member and the support member. The second light-absorbing layer contacts the thermal transfer member and disposed on the thermal transfer member.

Abstract: A passive wavelength-division multiplexing fiber-optic temperature sensor, as well as a distributed fiber-optic temperature sensing system, incorporates at least one wavelength-division-multiplexing optical coupler, so that any given sensor interfaces optically by at least one designated optical wavelength, thus providing means for any given fiber-optic temperature sensor to be distinguished from other fiber-optic temperature sensors of similar design operating on the same optical fiber system.

Abstract: A method for measuring the differential emissivity between two sites on the surface of a body and the temperature of the two sites. The method includes a plurality of measurements of the infrared radiation arising from each of the two sites under a number of different conditions. Some of the measurements include irradiation by external infrared radiation at a known wavelength and intensity. The infrared radiation arising from each of the sites may include emitted radiation, reflected ambient radiation, and reflected external radiation. Additionally, the temperature determined using the method described can be used to calibrate infrared imaging devices used to inspect the entire body.

Abstract: A thermal sensor that includes a ceramic body formed of NTC thermister ceramic, heat sensing part electrodes, temperature compensation part electrodes, external electrodes, and a cavity. A heat sensing part, which is the surface layer of the ceramic body, is heated by, for example, radiant heat transfer, reducing the resistance value of a thermister ceramic layer between the heat sensing part electrodes. Since the heat of the heat sensing part of the ceramic body is insulated by the cavity and thus prevented from diffusing, the heat capacity of the heat sensing unit is reduced, obtaining high sensitivity and high responsiveness.

Abstract: A technique for determining the temperature of a sample including a semiconductor film 20 having a measurable optical absorption edge deposited on a transparent substrate 22 of material having no measurable optical absorption edge, such as a GaN film 20 deposited on an Al2O3 substrate 20 for blue and white LEDs. The temperature is determined in real-time as the film 20 grows and increases in thickness. A spectra based on the diffusely scattered light from the film 20 is produced at each incremental thickness. A reference division is performed on each spectra to correct for equipment artifacts. The thickness of the film 20 and an optical absorption edge wavelength value are determined from the spectra. The temperature of the film 20 is determined as a function of the optical absorption edge wavelength and the thickness of the film 20 using the spectra, a thickness calibration table, and a temperature calibration table.

Abstract: A tip assembly for an IR thermometer apparatus includes a heat sink having a heat sink cavity and a tip section and a fluid path and at least one hydraulic port. The tip assembly also includes an IR sensor mechanically seated in the tip section and thermally coupled to the heat sink. The tip assembly also includes an electrical connector configured to provide an electrical connection to the tip assembly. A fluid having a fluid temperature is introduced into the fluid path via the hydraulic port. The fluid causes the heat sink and the IR sensor to substantially reach one or more pre-determined temperatures by thermal conduction during calibration of the tip assembly. Another tip assembly having an internal heat source is described. Another tip assembly having an internal heat pump is described. A method to calibrate a tip assembly is also described.

Abstract: Various techniques are provided for determining thermal resistance values of building materials through the use of infrared cameras. In one example, an infrared camera may be used to capture one or more infrared images of a wall. Using temperatures obtained from the images, a thermal resistance value such as an R-Value associated with the wall may be determined. Potential cost savings associated with adjusting the thermal resistance value may also be determined.

Abstract: Provided according to one or more embodiments is a thermostat having a housing, the housing including a forward-facing surface, the thermostat comprising a passive infrared (PIR) motion sensor disposed inside the housing for sensing occupancy in the vicinity of the thermostat. The PIR motion sensor has a radiation receiving surface and is able to detect the lateral movement of an occupant in front of the forward-facing surface of the housing. The thermostat further comprises a grille member having one or more openings and included along the forward-facing surface of the housing, the grille member being placed over the radiation receiving surface of the PIR motion sensor. The grille member is configured and dimensioned to visually conceal and protect the PIR motion sensor disposed inside the housing, the visual concealment promoting a visually pleasing quality of the thermostat, while at the same time permitting the PIR motion sensor to effectively detect the lateral movement of the occupant.